Informational fault logged by the central gateway (CAN/CAN-Gateway): the high-speed CAN bus (HSB) performed a power-on reset — typically after the battery was disconnected/reconnected or a low-voltage event. Benign; clears on its own once the bus stays powered. Read over UDS from the gateway module, not the engine ECU (raw manufacturer code 00 04 01).
SYMPTOMS
- No drivability effect
- May appear after a battery disconnect or jump start
LIKELY CAUSES
- Battery disconnected/reconnected
- Low battery voltage / weak battery
- Normal power-cycle after service
DIAGNOSIS STEPS
- Confirm battery health and terminals
- Clear the code; it should not return if voltage is stable